Speed-indicator and time-register.



2 SHEETS-SHEET 1.

gian@ ff No. 791,057. PATENTED MAY 30, 1905.

' W. G. TODHUNTER.

SPEED INDICATOR AND TIME REGISTER.

APPLICATION FILED SEPT. 2a, 1903.

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UNITED STATES Patented May 30, 1905.

PATENT OFFICE.

SPEED-INDICATOR AND TIME-REGISTER.

SPECIFICATION forming part of Letters Patent No. 791,057, dated May 30,1905.

t Application filed September 28,1903. Serial No. 174,891.

To fr/ZZ 1071/0121/ t party concern,.-

Be it known that I, ZILLIAM GRAHAM ToD- HUNTER, a subject of the King ofGreat Britai n, residing at 213 Burrage road, Plunistead, county o'l'Kent, England, have invented a new and useful Speed-Indicator and Time-Register, of which the following is a speciiication.

' This invention relates to a speed-indicator and time-register chieliyfor use on motor road-vehicles and with ships logs.

According to the invention the improved apparatus comprises a clock,tothe hour-arbor ot' which is conveniently attached a plate, frame, or thelike adapted to carry a disk or ring of paper or other suitablematerial, so that the said disk rotates with the hour-arbor. Inconjunction with the paper disk or ring I provideapricker forperfor-ating the said disk or ring, and this perforating is effected byrelative movement between the disk or ring and the pricker through themedium of a projection which is rotated by the moving vehicle or loginthe same direction as that in which the hour-arbor and paper disk move.It will therefore be seen that the perforations in the paper disk, oneof which is made at each revolution of the said projection, give ameasure of the speed of the vehicle. Counting mechanism is alsoadvantageously provided for indicating total distance passed through,and a device can be furnished for giving an audible signal atintervals-for example, on the completion of each mile of motion.

In the accompanying drawings, Figure 1 is a Vfront elevation ofapparatus made according to the invention and designed for use uponroad-vehicles. Fig. 2 is a sectional plan view. Fig. 3 is a sectionalside view, and Fig. 4 is a rear elevation oi' the device with the backoi' the case removed to show the interior.

a is a case or box, andv Z is the clock, which is fitted therein, saidclock being of any suitable construction. The details thereof have beenomitted in the drawings.

c is the hour-arbor of the clock, and (Z is the frame, which is keyed tothe arbor c and which is adapted to receive the paper ring e, securedthereto by the clips ff on the 'frame CZ.

g is the pricker, which is rigidly fixed to the case fr and the pointot' which extends into a hole /L in a slide z'. This slide a' is held ina guide j in the case a and is provided with a slit v", into which thepaper ring e extends, the point of the pricker being' normally behindthe said ring, as clearly shown in Fig. 2. To prick the paper c, theslide e' is pulled along the guide .7', and this is effected through themedium of a rod Z1', which is secured to the said slide fe and isjointed at its inner end to an arm Z, preferably a spring-arm. The arm Zis secured at one end, as at Z', to a stationary part of the frame. Todepress this arm Z,and thus force the paper ring e onto the prickerpointat regular intervals corresponding to a series of distances ofpredetermined length passed through by the vehicle to which theapparatus is attached, I provide a cam projection fm upon a worm-wheeln, which is preferably annular and mounted upon rollers a and has itsaxis coincident with that of the hourarbor and which gears with a wormo, keyed upon a spindle p, held in bearings 7 1/ on the case c of theapparatus, the said spindle being' adapted to be intermittently rotatedthrough the medium of the star-wheel jf, which receives its motion fromone of the drivingwheels of the vehicle, being moved through one toothfor each revolution of the said vehicle-wheel.

1n the drawings the circumference of the clock-face Z is shown graduatedin one onehundredth of a mile, (the whole circumference corresponding tothe distance of one mile,) and a pointer q, secured to the worm-wheel11., passes over the graduations upon the said clock-face Z as theworm-wheel rotates. It will therefore be seen that a perforation is madein the paper ring e for each mile through which the vehicle moves, andthe number of perforations made while the paper ring a has passedthrough an angular distance corresponding to one hour on the clock-facegives the average speed of the vehicle in miles per hour during thatinterval.

7' is a counting mechanism of ordinary construction which is iittedwithin the case a and is operated by a stud or tinger fr upon theworm-wheel n. This mechanism indicates the total distance passed throughby the vehicle.

IOO

s is an electric bell Which is adapted to give an audible signal eachtime the vehicle has passed through, say, one mile. This is effected byclosing an electric circuit in which the bell is inserted once for everyrevolution of the Worm-Wheel n. To this end the movement of the arm Z bythe cam projection m, pushes a spring-contact t, through the mediuml ofthe projection t', against another spring-contact, a, thereby closingthe electric circuit at the same moment that a perforation is being madein the paper ring e.

It is to be understood that although I have particularly described myinvention as applied to apparatus for use on road-vehicles the saidapparatus is also applicable for use in connection with ships logs.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatWhat I claim is- 1. In a speed-indicator and time-register thecombination With a clock mechanism, of a rotatable frame operativelyconnected with the hour-arbor of the clock mechanism, and adapted to berotated once for each revolution of the hour-arbor, said framebeingconstructed to carry a removable paper ring, a stationary prickerhaving its point located adjacent to the path of said paper ring. atransversely-movable device having a fixed relation to the path of saidpaper ring, located adjacent to said pricker, capable of movementtransversely of said paper ring, and having a part for engaging thepaper ring on the side opposite said pricker, to force said paper uponsaid pricker and mechanism operated by the movement of the vehicle foroperating said transversely-movable device, to puncture the paper,substantially as described.

2. In a speed-indicator and time-register, the combination With a clock,of a frame mounted on the hour-arbor thereof and adapted to carry aremovable paper ring, a stationary pricker mounted transversely of saidpaper ring, a sliding member adapted to engage the edge of said ring andforce it against said pricker, a rotating member actuated by themovement of the vehicle or the like, the speed ary pricker mountedtransversely of said ring,

a sliding member adapted to engage the edge of said ring and force itagainst said pricker, a spring-arm having one end secured to astationary part and having its free end pivoted to said sliding member,a rotating member actuated by the motion of the vehicle or the like, thespeed of which is to be indicated, a Worm-Wheel operatively connectedwith said rotating member, a caml on said worm-Wheel adapted to strikesaid spring-arm whereby said paper ring is pressed against said pricker,an electric circuit,y a bell located therein, and

a spring-contact adapted to be actuated by a cam on said Worm-Wheel toclose said circuit simultaneously With the movement of said slidingmember, substantial-ly as and for the purpose described.

WILLIAM GRAHAM TODHUNTER.

Witnesses:

JOHN E. BoUsFIELD, C. G. REDFERN.

